Problems to configure IMAP Quota

[Steffen Kaiser]

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On Fri, 8 Sep 2017, Jacques Belin wrote:

> 1) It seems that when we use the sql dict, a map contaning the patern
> "priv/quota/limit/messages" is mandatory. Not specifying it  in
> dovecot-dict-sql.conf.ext issues an error.  As we are interested only by
> the storage size and don't want to process the number of messages, how
> to get rid of it ?

No, not that I know of. The value is calculated and storred.

> 2) We store the storage value in kilobytes.
> But the plugin seems to only accept storage in bytes, Is there any way
> to let know to dovecot that the value stored in the database is in
> kilobytes ? (of course, I tried to put "size/1024" in the value_field
> field of the map. It works, but generate a lot of error lines in the
> dovecot log as it create a syntaxly incorrect MySQL uodate request...)

The plugin maintains an internal value in a dict. Don't change it and 
keep your hands off.
If you need to access the current values from the DB, use a view, which 
transforms the internal value into what you need.

The limits can be expressed in any way, have your userdb query calculate 
bytes from whatever value you have in the userdb.

For:

> We manage a mail server using Dovecot under Debian.
> Since a long time, we run nightly a script permitting to display the
> storage usage of each user on the webmail, using internal calls. The
> usage on each mailbox is stored in a Mysql database.

use doveadm to get the values and modify them. If the VIEW does not fit.

- -- 
Steffen Kaiser
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